/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Sequencer/MovieSceneControlRigParameterSection.h
Key Zero Values on all or just selected controls in these section at the specified time
void KeyZeroValue ( [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) InFrame, EMovieSceneKeyInterpolation DefaultInterpolation, bool bSelected )